Graze Posted June 26, 2019 Report Share Posted June 26, 2019 I just want to double check recommended oil grades for my TR4 engine was re built 2years ago & I have been using Penrite 10W-50 extra zinc full mineral which I think is correct just had the gearbox & J type overdrive re furbished - believe EP 90 GL4 is the correct oil but some people use the same as the engine as I understand - is the Penrite ok? and for the diff - not been re built but still performing ok - what should i use? and want to re-do the uprated lever arm dampers - what is the best oil grade for them? any advice would be much appreciated Graeme Quote Link to post Share on other sites
Hamish Posted June 26, 2019 Report Share Posted June 26, 2019 Hi Graeme i have a 3a but they are effectively the same as a 4 engine I use valvoline VR1 mineral oil gearbox /OD Just rebuilt by professional and he recommended dynolite gear 40 oil. i used to use EP90 GL4, it does stink tho rear axle/diff EP90 with molyslip as that’s what the previous owner put in. There will be other opinions along in a little while I’m sure H Quote Link to post Share on other sites
AndyR100 Posted June 26, 2019 Report Share Posted June 26, 2019 (edited) Lots of opinions ..... For engine oil I used to use VR1 mineral 20/50 in the TR and Stag but it’s price has increased more than I felt reasonable...... been using Classic Oils mineral 20/50 for some time now, the only one that I am aware of clearly stating its zinc as ZDDP on the label and at a sensible price https://www.classic-oils.net/Classic-Oils-Heritage-20W50 ...... Andy Edited June 26, 2019 by AndyR100 Quote Link to post Share on other sites
RogerH Posted June 26, 2019 Report Share Posted June 26, 2019 Hi Graeme, have eventually replied to your PM - just back from Scotlandshire. Roger Quote Link to post Share on other sites
Graze Posted June 26, 2019 Author Report Share Posted June 26, 2019 Thanks all Graeme Quote Link to post Share on other sites
monty Posted June 27, 2019 Report Share Posted June 27, 2019 Same as Andy. Veering away from Millers Classic 20/50 that is getting expensive to Classic Oils stuff. Penrite Gear 40 in gearbox & o/d.k Quote Link to post Share on other sites
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